Non-transparent microvoided axially stretched film, production process therefor and process for obtaining a transparent pattern therewith
An antioxidant, polyester technology, applied in the direction of replication/marking method, temperature recording method, printing, etc., can solve the problems of sufficient dimensional stability, insufficient opacity, insufficient whiteness of opaque microporous axially stretched film, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 5 approach
[0056] According to the fifth embodiment of the opaque microporous axially stretched self-supporting film of the present invention, the weight ratio of linear polyester to uncrosslinked SAN-polymer is 2.3:1 to 13:1, 2.5:1 to 10 The range of :1 is preferred, and the range of 2.7:1 to 9.0:1 is particularly preferred.
[0057] According to the sixth embodiment of the opaque microporous axially stretched self-supporting film of the present invention, the weight ratio of linear polyester to uncrosslinked SAN-polymer is 2.85:1 to 7.0:1, 3.0:1 to 5.5 The range of :1 is preferred, and the range of 3.2:1 to 4.9:1 is particularly preferred.
[0058] According to the seventh embodiment of the opaque microporous axially stretched self-supporting film of the present invention, the opaque microporous axially stretched self-supporting film is provided with alphanumeric characters, embossed patterns, optional embossed holograms and At least one of continuous halftone or digital image.
[0059] Acc...
no. 4 approach
[0075] According to the fourth embodiment of the method for manufacturing an opaque microporous axially stretched film of the present invention, the method includes a further step, step (iv), wherein the temperature> 2.5N / mm 2 Apply another stretching process to the film at an angle of substantially 90° to the first stretching process under the stretching tension of ≥4.0N / mm 2 The tensile tension of is preferred.
[0076] According to the fifth embodiment of the method for manufacturing an opaque microporous axially stretched film of the present invention, the method includes a further step, step (iv), wherein the stretching tension of >2.5 is substantially equal to the first stretching process. Another stretching process is applied to the film at a 90° angle to at least twice the initial length, and step iv) is performed at a temperature that is at most 30°C higher than the glass transition temperature of the linear polyester matrix, which is higher than the linear poly A tempera...
no. 7 approach
[0078] According to the seventh embodiment of the method for manufacturing an opaque microporous axially stretched film of the present invention, the method further includes a heat fixing step as the fifth step.
[0079] According to the eighth embodiment of the method for manufacturing an opaque microporous axially stretched film of the present invention, the stretch ratio of the longitudinal stretch is about 2 to about 6, preferably about 2.5 to about 5, and particularly preferably 3 to 4 . The higher the stretch ratio, the higher the opacity.
[0080] According to the ninth embodiment of the method for manufacturing an opaque microporous axially stretched film of the present invention, the transverse stretch ratio is about 2 to about 6, and the range of 2.5 to about 5 is preferred, and the range of about 3 to about 4 Especially preferred. The higher the stretch ratio, the higher the opacity. In addition, the higher the stretching rate in % / min, the higher the opacity.
[0081]...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More